<div class="content" name="RpcEnumAddFilter" uuid="2cd006cd-fb10-43a6-a16d-b01379f9cb53"><p>The RpcEnumAddFilter method adds another filter to the
current enumeration. This method MUST be called after <span><a href="f17f4b8d-8d52-4538-acf3-cdfbe581a99b" data-linktype="relative-path">RpcOpenEnum</a></span> and
before <span><a href="1a7d5d1d-1ce5-448f-bb4a-c79741982edb" data-linktype="relative-path">RpcGetEnumResult</a></span> or
<span><a href="cb2be084-41dd-44ec-81dc-52d371a28554" data-linktype="relative-path">RpcGetEnumResultEx</a></span>.
No special permissions are required to call this method.</p><dl>
<dd>
<div><pre> HRESULT RpcEnumAddFilter(
   [in] ENUM_HANDLE hEnum,
   [in] ENUM_HANDLE hSubEnum
 );
</pre></div>
</dd></dl><p><b>hEnum: </b> The <span><a href="c41d3367-04c9-4c93-babf-9b5de834eb29#gt_5044babb-08e3-4bb9-bc12-fe8f542b05ee" data-linktype="relative-path">handle</a></span> to the
session enumeration object. This is of type <span><a href="15f02d59-200a-435d-a07b-055e1276d01c" data-linktype="relative-path">ENUM_HANDLE</a></span>.</p><p><b>hSubEnum: </b> The handle to another enumeration
whose filter will be applied to the current enumeration. The other enumeration
MUST be created using RpcOpenEnum and any combination of <span><a href="14ed1d68-71f2-4495-9946-0116f87ee1ee" data-linktype="relative-path">RpcFilterByState</a></span>,
<span><a href="7672f2e6-7b12-4dc2-90b0-ad43a231d83e" data-linktype="relative-path">RpcFilterByCallersName</a></span>,
and <span><a href="fd4db5fa-13b3-490b-9528-3cb108544a4e" data-linktype="relative-path">RpcFilterBySessionType</a></span>.</p><p><b>Return Values: </b> The method MUST return S_OK
(0x00000000) on success; otherwise, it MUST return an implementation-specific
negative value.</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Return value/code</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>0x00000000 S_OK</td>
  <td>Successful completion.</td>
 </tr></tbody></table>
</dd></dl><p> </p></div>